content: removes some dead code

IsOfficialBuild() appears unused.

BUG=none
TEST=none

Change-Id: I4a2552d143015bb22f112bcbde2faa9e2d243280
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2132666
Auto-Submit: Scott Violet <sky@chromium.org>
Commit-Queue: John Abd-El-Malek <jam@chromium.org>
Reviewed-by: John Abd-El-Malek <jam@chromium.org>
Cr-Commit-Position: refs/heads/master@{#756096}

content/browser/android/browser_startup_controller.cc

@@ -8,8 +8,6 @@
 #include "base/android/jni_string.h"
 #include "content/browser/android/content_startup_flags.h"
 #include "content/browser/browser_main_loop.h"
-#include "ppapi/buildflags/buildflags.h"
-
 #include "content/public/android/content_jni_headers/BrowserStartupControllerImpl_jni.h"
 
 using base::android::JavaParamRef;
@@ -38,14 +36,6 @@ static void JNI_BrowserStartupControllerImpl_SetCommandLineFlags(
   SetContentCommandLineFlags(static_cast<bool>(single_process));
 }
 
-static jboolean JNI_BrowserStartupControllerImpl_IsOfficialBuild(JNIEnv* env) {
-#if defined(OFFICIAL_BUILD)
-  return true;
-#else
-  return false;
-#endif
-}
-
 static void JNI_BrowserStartupControllerImpl_FlushStartupTasks(JNIEnv* env) {
   BrowserMainLoop::GetInstance()->SynchronouslyFlushStartupTasks();
 }

content/public/android/java/src/org/chromium/content/browser/BrowserStartupControllerImpl.java

@@ -494,9 +494,6 @@ public class BrowserStartupControllerImpl implements BrowserStartupController {
     @NativeMethods
     interface Natives {
         void setCommandLineFlags(boolean singleProcess);
-        // Is this an official build of Chrome? Only native code knows for sure. Official build
-        // knowledge is needed very early in process startup.
-        boolean isOfficialBuild();
 
         void flushStartupTasks();
     }