Delete Android joystick zoom code.

content/public/android/BUILD.gn

Index: content/public/android/BUILD.gn
diff --git a/content/public/android/BUILD.gn b/content/public/android/BUILD.gn
index 0c020174603453199826b81f7750a01837082b14..431011060887110156d2e683eaa8bc40fba17365 100644
--- a/content/public/android/BUILD.gn
+++ b/content/public/android/BUILD.gn
@@ -188,7 +188,6 @@ android_library("content_java") {
     "java/src/org/chromium/content/browser/input/ImeUtils.java",
     "java/src/org/chromium/content/browser/input/InputMethodManagerWrapper.java",
     "java/src/org/chromium/content/browser/input/InputMethodUma.java",
-    "java/src/org/chromium/content/browser/input/JoystickZoomProvider.java",
     "java/src/org/chromium/content/browser/input/LegacyPastePopupMenu.java",
     "java/src/org/chromium/content/browser/input/LGEmailActionModeWorkaround.java",
     "java/src/org/chromium/content/browser/input/PastePopupMenu.java",
@@ -416,7 +415,6 @@ android_library("content_javatests") {
     "javatests/src/org/chromium/content/browser/ContentViewLocationTest.java",
     "javatests/src/org/chromium/content/browser/ContentViewPopupZoomerTest.java",
     "javatests/src/org/chromium/content/browser/ContentViewScrollingTest.java",
-    "javatests/src/org/chromium/content/browser/ContentViewZoomingTest.java",
     "javatests/src/org/chromium/content/browser/EncodeHtmlDataUriTest.java",
     "javatests/src/org/chromium/content/browser/GestureDetectorResetTest.java",
     "javatests/src/org/chromium/content/browser/ImportantFileWriterAndroidTest.java",