Closes #1151: As a developer, Flipper integration might help me with debugging

app/build.gradle

@@ -316,6 +316,9 @@ dependencies {
 
     implementation Deps.glide
     annotationProcessor Deps.glideAnnotationProcessor
+
+    debugImplementation Deps.flipper
+    debugImplementation Deps.soLoader
 }
 
 if (project.hasProperty("raptor")) {

app/src/debug/AndroidManifest.xml

@@ -3,8 +3,15 @@
         xmlns:android="http://schemas.android.com/apk/res/android"
         xmlns:tools="http://schemas.android.com/tools">
 
+    <uses-permission android:name="android.permission.ACCESS_WIFI_STATE" />
+
     <application
             tools:replace="android:name"
-            android:name="org.mozilla.fenix.DebugFenixApplication"/>
+            android:name="org.mozilla.fenix.DebugFenixApplication">
+
+        <activity android:name="com.facebook.flipper.android.diagnostics.FlipperDiagnosticActivity"
+                  android:exported="true"/>
+        <service android:name="com.facebook.flipper.plugins.leakcanary.RecordLeakService" />
+    </application>
 
 </manifest>

app/src/debug/java/org/mozilla/fenix/DebugFenixApplication.kt

@@ -7,6 +7,14 @@ package org.mozilla.fenix
 import android.content.Context
 import android.content.SharedPreferences
 import androidx.preference.PreferenceManager
+import com.facebook.flipper.android.AndroidFlipperClient
+import com.facebook.flipper.android.utils.FlipperUtils
+import com.facebook.flipper.plugins.inspector.DescriptorMapping
+import com.facebook.flipper.plugins.inspector.InspectorFlipperPlugin
+import com.facebook.flipper.plugins.leakcanary.LeakCanaryFlipperPlugin
+import com.facebook.flipper.plugins.leakcanary.RecordLeakService
+import com.facebook.flipper.plugins.sharedpreferences.SharedPreferencesFlipperPlugin
+import com.facebook.soloader.SoLoader
 import com.squareup.leakcanary.AndroidHeapDumper
 import com.squareup.leakcanary.HeapDumper
 import com.squareup.leakcanary.LeakCanary
@@ -17,6 +25,22 @@ import java.io.File
 
 class DebugFenixApplication : FenixApplication() {
 
+    override fun onCreate() {
+        super.onCreate()
+        SoLoader.init(this, false)
+
+        if (FlipperUtils.shouldEnableFlipper(this)) {
+            AndroidFlipperClient.getInstance(this).apply {
+                addPlugin(InspectorFlipperPlugin(this@DebugFenixApplication,
+                    DescriptorMapping.withDefaults()))
+                addPlugin(LeakCanaryFlipperPlugin())
+                addPlugin(SharedPreferencesFlipperPlugin(this@DebugFenixApplication,
+                    this@DebugFenixApplication.packageName + "_preferences"))
+                start()
+            }
+        }
+    }
+
     private var heapDumper: ToggleableHeapDumper? = null
 
     override fun setupLeakCanary() {
@@ -24,6 +48,7 @@ class DebugFenixApplication : FenixApplication() {
         val defaultDumper = AndroidHeapDumper(this, leakDirectoryProvider)
         heapDumper = ToggleableHeapDumper(this, defaultDumper)
         LeakCanary.refWatcher(this)
+            .listenerServiceClass(RecordLeakService::class.java)
             .heapDumper(heapDumper)
             .buildAndInstall()
     }

buildSrc/src/main/java/Dependencies.kt

@@ -35,6 +35,8 @@ private object Versions {
     const val mockito = "2.23.0"
     const val mockk = "1.9.kotlin12"
     const val glide = "4.9.0"
+    const val flipper = "0.18.0"
+    const val soLoader = "0.5.1"
 }
 
 @Suppress("unused")
@@ -141,4 +143,7 @@ object Deps {
 
     const val glide = "com.github.bumptech.glide:glide:${Versions.glide}"
     const val glideAnnotationProcessor = "com.github.bumptech.glide:compiler:${Versions.glide}"
+
+    const val flipper = "com.facebook.flipper:flipper:${Versions.flipper}"
+    const val soLoader = "com.facebook.soloader:soloader:${Versions.soLoader}"
 }

gradle.properties

@@ -6,7 +6,7 @@
 # http://www.gradle.org/docs/current/userguide/build_environment.html
 # Specifies the JVM arguments used for the daemon process.
 # The setting is particularly useful for tweaking memory settings.
-org.gradle.jvmargs=-Xmx1536m
+org.gradle.jvmargs=-Xmx2048m
 # When configured, Gradle will run in incubating parallel mode.
 # This option should only be used with decoupled projects. More details, visit
 # http://www.gradle.org/docs/current/userguide/multi_project_builds.html#sec:decoupled_projects