[Android] Upstream scene layers

chrome/android/java/src/org/chromium/chrome/browser/compositor/scene_layer/StaticTabSceneLayer.java

Index: chrome/android/java/src/org/chromium/chrome/browser/compositor/scene_layer/StaticTabSceneLayer.java
diff --git a/chrome/android/java/src/org/chromium/chrome/browser/compositor/scene_layer/StaticTabSceneLayer.java b/chrome/android/java/src/org/chromium/chrome/browser/compositor/scene_layer/StaticTabSceneLayer.java
new file mode 100644
index 0000000000000000000000000000000000000000..2f56a95a9a3b9feaba6066ca041a45bb847c727b
--- /dev/null
+++ b/chrome/android/java/src/org/chromium/chrome/browser/compositor/scene_layer/StaticTabSceneLayer.java
@@ -0,0 +1,78 @@
+// Copyright 2015 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.
+
+package org.chromium.chrome.browser.compositor.scene_layer;
+
+import android.graphics.Rect;
+
+import org.chromium.base.JNINamespace;
+import org.chromium.chrome.browser.compositor.LayerTitleCache;
+import org.chromium.chrome.browser.compositor.layouts.components.LayoutTab;
+import org.chromium.chrome.browser.compositor.layouts.content.TabContentManager;
+import org.chromium.chrome.browser.fullscreen.ChromeFullscreenManager;
+
+/**
+ * A SceneLayer to render a static tab.
+ */
+@JNINamespace("chrome::android")
+public class StaticTabSceneLayer extends SceneLayer {
+    // NOTE: If you use SceneLayer's native pointer here, the JNI generator will try to
+    // downcast using reinterpret_cast<>. We keep a separate pointer to avoid it.
+    private long mNativePtr;
+
+    private final int mResToolbarControlContainer;
+
+    public StaticTabSceneLayer(int resToolbarControlContainer) {
+        mResToolbarControlContainer = resToolbarControlContainer;
+    }
+
+    public void update(float dpToPx, Rect contentViewport, LayerTitleCache layerTitleCache,
+            TabContentManager tabContentManager, ChromeFullscreenManager fullscreenManager,
+            LayoutTab layoutTab) {
+        if (layoutTab == null) {
+            return;
+        }
+
+        // TODO(dtrainor, clholgat): remove "* dpToPx" once the native part is fully supporting dp.
+        nativeUpdateTabLayer(mNativePtr, contentViewport.left, contentViewport.top,
+                contentViewport.width(), contentViewport.height(), tabContentManager,
+                layoutTab.getId(), mResToolbarControlContainer, layoutTab.canUseLiveTexture(),
+                false, layoutTab.getBackgroundColor(), layoutTab.getRenderX() * dpToPx,
+                layoutTab.getRenderY() * dpToPx, layoutTab.getScaledContentWidth() * dpToPx,
+                layoutTab.getScaledContentHeight() * dpToPx, fullscreenManager.getContentOffset(),
+                layoutTab.getStaticToViewBlend(), layoutTab.getSaturation());
+    }
+
+    // TODO(pedrosimonetti): Remove this once contextual search is moved into an overlay.
+    public void setContentTree(SceneLayer contentTree) {
+        nativeSetContentTree(mNativePtr, contentTree);
+    }
+
+    @Override
+    protected void initializeNative() {
+        if (mNativePtr == 0) {
+            mNativePtr = nativeInit();
+        }
+        assert mNativePtr != 0;
+    }
+
+    /**
+     * Destroys this object and the corresponding native component.
+     */
+    @Override
+    public void destroy() {
+        super.destroy();
+        mNativePtr = 0;
+    }
+
+    private native long nativeInit();
+    private native void nativeUpdateTabLayer(long nativeStaticTabSceneLayer, float contentViewportX,
+            float contentViewportY, float contentViewportWidth, float contentViewportHeight,
+            TabContentManager tabContentManager, int id, int toolbarResourceId,
+            boolean canUseLiveLayer, boolean canUseNtpFallback, int backgroundColor, float x,
+            float y, float width, float height, float contentOffsetY, float staticToViewBlend,
+            float saturation);
+    private native void nativeSetContentTree(
+            long nativeStaticTabSceneLayer, SceneLayer contentTree);
+}