[piexwasm] Swap RAW image details width and height if needed

Orientations of 5 or more flip the image width/height on render, while
our returned EXIF IFD data does not: https://crbug.com/1039141#c9

Fix that: flip the EXIF IFD metadata width/height if needed.

Tbr: lucmult
Bug: 1039141
Change-Id: Icfaece4bedc49b2ab6870a763cea21939b384c3a
Reviewed-on: https://chromium-review.googlesource.com/c/chromium/src/+/2060442Reviewed-by: Noel Gordon <noel@chromium.org>
Commit-Queue: Noel Gordon <noel@chromium.org>
Cr-Commit-Position: refs/heads/master@{#742077}

ui/file_manager/image_loader/piex_loader.js

@@ -298,9 +298,9 @@ class ImageBuffer {
     return {
       thumbnail: new Uint8Array(view).buffer,
       mimeType: 'image/jpeg',
+      ifd: this.details(result, preview.orientation),
       orientation: preview.orientation,
       colorSpace: preview.colorSpace,
-      ifd: this.details(result),
       id: this.id,
     };
   }
@@ -341,9 +341,9 @@ class ImageBuffer {
     return {
       thumbnail: new Uint8Array(view).buffer,
       mimeType: 'image/jpeg',
+      ifd: this.details(result, thumbnail.orientation),
       orientation: thumbnail.orientation,
       colorSpace: thumbnail.colorSpace,
-      ifd: this.details(result),
       id: this.id,
     };
   }
@@ -437,9 +437,9 @@ class ImageBuffer {
     return {
       thumbnail: bitmap.buffer,
       mimeType: 'image/bmp',
+      ifd: this.details(result, thumbnail.orientation),
       orientation: thumbnail.orientation,
       colorSpace: thumbnail.colorSpace,
-      ifd: this.details(result),
       id: this.id,
     };
   }
@@ -451,9 +451,10 @@ class ImageBuffer {
    *
    * @private
    * @param {!PiexWasmImageResult} result
+   * @param {number} orientation - image EXIF orientation
    * @return {?string}
    */
-  details(result) {
+  details(result, orientation) {
     const details = result.details;
     if (!details) {
       return null;
@@ -472,6 +473,13 @@ class ImageBuffer {
       }
     }
 
+    const usesWidthAsHeight = orientation >= 5;
+    if (usesWidthAsHeight) {
+      const width = format.width;
+      format.width = format.height;
+      format.height = width;
+    }
+
     return JSON.stringify(format);
   }