Follow up CL for 541713002

As suggested by 'aurmias' fixed mentioned comments in issue 541713002
Fixed issues:
1.Using one button for stop and reload option.
2.Removed tabs from chrome_shell_acivity.xml
3.moved resource from chrome/android/java/res to chrome/android/shell/res

BUG=

Review URL: https://codereview.chromium.org/546383002

Cr-Commit-Position: refs/heads/master@{#294164}

chrome/android/shell/java/src/org/chromium/chrome/shell/ChromeShellToolbar.java

@@ -52,8 +52,8 @@ public class ChromeShellToolbar extends LinearLayout {
 
     private SuggestionPopup mSuggestionPopup;
 
-    private ImageButton mStopButton;
-    private ImageButton mReloadButton;
+    private ImageButton mStopReloadButton;
+    private boolean mLoading = true;
 
     /**
      * @param context The Context the view is running in.
@@ -90,10 +90,13 @@ public class ChromeShellToolbar extends LinearLayout {
     private void onLoadProgressChanged(int progress) {
         removeCallbacks(mClearProgressRunnable);
         mProgressDrawable.setLevel(100 * progress);
-        boolean isLoading = progress != 100;
-        mStopButton.setVisibility(isLoading ? VISIBLE : GONE);
-        mReloadButton.setVisibility(isLoading ? GONE : VISIBLE);
-        if (!isLoading) postDelayed(mClearProgressRunnable, COMPLETED_PROGRESS_TIMEOUT_MS);
+        mLoading = progress != 100;
+        if (mLoading) {
+            mStopReloadButton.setImageResource(R.drawable.btn_stop_normal);
+        } else {
+            mStopReloadButton.setImageResource(R.drawable.btn_reload_normal);
+            postDelayed(mClearProgressRunnable, COMPLETED_PROGRESS_TIMEOUT_MS);
+        }
     }
 
     /**
@@ -182,19 +185,16 @@ public class ChromeShellToolbar extends LinearLayout {
     }
 
     private void initializeStopReloadButton() {
-        mStopButton = (ImageButton)findViewById(R.id.stop);
-        mStopButton.setOnClickListener(new OnClickListener() {
+        mStopReloadButton = (ImageButton)findViewById(R.id.stop_reload_button);
+        mStopReloadButton.setOnClickListener(new OnClickListener() {
             @Override
             public void onClick(View v) {
+                if (mLoading) {
                     mTab.getContentViewCore().stopLoading();
-            }
-        });
-        mReloadButton = (ImageButton)findViewById(R.id.reload);
-        mReloadButton.setOnClickListener(new OnClickListener() {
-            @Override
-            public void onClick(View v) {
+                } else {
                     mTab.getContentViewCore().reload(true);
                 }
+            }
         });
     }
 

chrome/android/shell/res/layout/chrome_shell_activity.xml

@@ -16,17 +16,11 @@
         android:layout_height="wrap_content"
         android:orientation="horizontal"
         android:background="@drawable/progress">
-	<ImageButton android:id="@+id/stop"
+        <ImageButton android:id="@+id/stop_reload_button"
             android:layout_width="38dp"
             android:layout_height="38dp"
-            android:src="@android:drawable/ic_menu_close_clear_cancel"
+            android:src="@drawable/btn_stop_normal"
             android:scaleType="center" />
-	<ImageButton android:id="@+id/reload"
-            android:layout_width="38dp"
-            android:layout_height="38dp"
-            android:src="@drawable/btn_reload_normal"
-            android:scaleType="center"
-            android:visibility="gone" />
         <EditText android:id="@+id/url"
             android:layout_width="0dp"
             android:layout_height="wrap_content"