Revert of Android: support multiple displays on C++ side

ui/android/display_android_manager.cc

-// Copyright 2012 The Chromium Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style license that can be
-// found in the LICENSE file.
-
-#include "ui/android/display_android_manager.h"
-
-#include <jni.h>
-#include <map>
-
-#include "base/android/jni_android.h"
-#include "base/stl_util.h"
-#include "jni/DisplayAndroidManager_jni.h"
-#include "ui/android/screen_android.h"
-#include "ui/android/window_android.h"
-#include "ui/display/display.h"
-
-namespace ui {
-
-using base::android::AttachCurrentThread;
-using display::Display;
-using display::DisplayList;
-
-void SetScreenAndroid() {
-  // Do not override existing Screen.
-  DCHECK_EQ(display::Screen::GetScreen(), nullptr);
-
-  DisplayAndroidManager* manager = new DisplayAndroidManager();
-  display::Screen::SetScreenInstance(manager);
-
-  JNIEnv* env = AttachCurrentThread();
-  Java_DisplayAndroidManager_onNativeSideCreated(env, (jlong)manager);
-}
-
-bool RegisterScreenAndroid(JNIEnv* env) {
-  return RegisterNativesImpl(env);
-}
-
-DisplayAndroidManager::DisplayAndroidManager() {}
-
-DisplayAndroidManager::~DisplayAndroidManager() {}
-
-// Screen interface.
-
-Display DisplayAndroidManager::GetDisplayNearestWindow(
-    gfx::NativeView view) const {
-  ui::WindowAndroid* window = view ? view->GetWindowAndroid() : nullptr;
-  if (window) {
-    DisplayList::Displays::const_iterator it =
-        display_list().FindDisplayById(window->display_id());
-    if (it != display_list().displays().end()) {
-      return *it;
-    }
-  }
-  return GetPrimaryDisplay();
-}
-
-// There is no notion of relative display positions on Android.
-Display DisplayAndroidManager::GetDisplayNearestPoint(
-    const gfx::Point& point) const {
-  NOTIMPLEMENTED();
-  return GetPrimaryDisplay();
-}
-
-// There is no notion of relative display positions on Android.
-Display DisplayAndroidManager::GetDisplayMatching(
-    const gfx::Rect& match_rect) const {
-  NOTIMPLEMENTED();
-  return GetPrimaryDisplay();
-}
-
-// Methods called from Java
-
-void DisplayAndroidManager::UpdateDisplay(
-    JNIEnv* env,
-    const base::android::JavaParamRef<jobject>& jobject,
-    jint sdkDisplayId,
-    jint physicalWidth,
-    jint physicalHeight,
-    jint width,
-    jint height,
-    jfloat dipScale,
-    jint rotationDegrees,
-    jint bitsPerPixel,
-    jint bitsPerComponent) {
-  gfx::Rect bounds_in_pixels = gfx::Rect(physicalWidth, physicalHeight);
-
-  // Physical width and height might be not supported.
-  if (bounds_in_pixels.IsEmpty())
-    bounds_in_pixels = gfx::Rect(width, height);
-
-  const gfx::Rect bounds_in_dip = gfx::Rect(
-      gfx::ScaleToCeiledSize(bounds_in_pixels.size(), 1.0f / dipScale));
-
-  display::Display display(sdkDisplayId, bounds_in_dip);
-
-  display.set_device_scale_factor(dipScale);
-  display.SetRotationAsDegree(rotationDegrees);
-  display.set_color_depth(bitsPerPixel);
-  display.set_depth_per_component(bitsPerComponent);
-  display.set_is_monochrome(bitsPerComponent == 0);
-
-  ProcessDisplayChanged(display, sdkDisplayId == primary_display_id_);
-}
-
-void DisplayAndroidManager::RemoveDisplay(
-    JNIEnv* env,
-    const base::android::JavaParamRef<jobject>& jobject,
-    jint sdkDisplayId) {
-  display_list().RemoveDisplay(sdkDisplayId);
-}
-
-void DisplayAndroidManager::SetPrimaryDisplayId(
-    JNIEnv* env,
-    const base::android::JavaParamRef<jobject>& jobject,
-    jint sdkDisplayId) {
-  primary_display_id_ = sdkDisplayId;
-}
-
-}  // namespace ui